diff --git a/pkgs/by-name/li/libev/package.nix b/pkgs/by-name/li/libev/package.nix
index 35ab0f808fcf..8e8435467dae 100644
--- a/pkgs/by-name/li/libev/package.nix
+++ b/pkgs/by-name/li/libev/package.nix
@@ -36,7 +36,11 @@ stdenv.mkDerivation (finalAttrs: {
 
   makeFlags =
     # doing this in configureFlags causes configure to fail
-    lib.optional (!static && stdenv.hostPlatform.isCygwin) "LDFLAGS=-no-undefined";
+    (lib.optional (!static && stdenv.hostPlatform.isCygwin) "LDFLAGS+=-no-undefined")
+    ++ (lib.optionals (!static && stdenv.hostPlatform.isWindows) [
+      "LDFLAGS+=-no-undefined"
+      "LDFLAGS+=-lws2_32"
+    ]);
 
   meta = {
     description = "High-performance event loop/event model with lots of features";
diff --git a/pkgs/by-name/ng/nghttp3/package.nix b/pkgs/by-name/ng/nghttp3/package.nix
index 5741d2dd8cc5..0b2e763b567d 100644
--- a/pkgs/by-name/ng/nghttp3/package.nix
+++ b/pkgs/by-name/ng/nghttp3/package.nix
@@ -26,7 +26,8 @@ stdenv.mkDerivation (finalAttrs: {
   cmakeFlags = [
     (lib.cmakeBool "ENABLE_SHARED_LIB" (!stdenv.hostPlatform.isStatic))
     (lib.cmakeBool "ENABLE_STATIC_LIB" stdenv.hostPlatform.isStatic)
-  ];
+  ]
+  ++ (lib.optional stdenv.hostPlatform.isWindows "-DENABLE_LIB_ONLY=1");
 
   doCheck = true;
 
@@ -39,7 +40,7 @@ stdenv.mkDerivation (finalAttrs: {
     changelog = "https://github.com/ngtcp2/nghttp3/releases/tag/v${finalAttrs.version}";
     description = "Implementation of HTTP/3 mapping over QUIC and QPACK in C";
     license = lib.licenses.mit;
-    platforms = lib.platforms.unix;
+    platforms = lib.platforms.unix ++ lib.platforms.windows;
     maintainers = with lib.maintainers; [ izorkin ];
   };
 })
diff --git a/pkgs/by-name/tz/tzdata/package.nix b/pkgs/by-name/tz/tzdata/package.nix
index a92873e965c4..df8c808ba402 100644
--- a/pkgs/by-name/tz/tzdata/package.nix
+++ b/pkgs/by-name/tz/tzdata/package.nix
@@ -61,6 +61,15 @@ stdenv.mkDerivation (finalAttrs: {
     "CFLAGS+=-DHAVE_STRUCT_STAT_ST_CTIM=0"
     "CFLAGS+=-DHAVE_SYMLINK=0"
     "CFLAGS+=-DRESERVE_STD_EXT_IDS"
+    # sys/stat.h does exist on Windows for us
+    "CFLAGS+=-DHAVE_SYS_STAT_H=1"
+    # It is called st_ctime on windows, this forces that
+    # choice
+    "CFLAGS+=-DHAVE_STRUCT_STAT_ST_CTIM=0"
+    "CFLAGS+=-DHAVE_MEMPCPY=1"
+    "CFLAGS+=-DHAVE_GETRESUID=0"
+    "CFLAGS+=-DHAVE_GETEUID=0"
+    "CFLAGS+=-DHAVE_FCHMOD=0"
   ]
   ++ lib.optionals stdenv.hostPlatform.isFreeBSD [
     "CFLAGS+=-DNETBSD_INSPIRED=0"
diff --git a/pkgs/development/libraries/ngtcp2/default.nix b/pkgs/development/libraries/ngtcp2/default.nix
index b05d452fa04d..ef64f8584f54 100644
--- a/pkgs/development/libraries/ngtcp2/default.nix
+++ b/pkgs/development/libraries/ngtcp2/default.nix
@@ -41,7 +41,10 @@ stdenv.mkDerivation (finalAttrs: {
     # This works in the dynamic case where the targets have the same name, but not here where they're suffixed with `_static`.
     # Also, the examples depend on Linux-specific APIs, so we avoid them on FreeBSD/Cygwin too.
     (lib.cmakeBool "ENABLE_LIB_ONLY" (
-      stdenv.hostPlatform.isStatic || stdenv.hostPlatform.isFreeBSD || stdenv.hostPlatform.isCygwin
+      stdenv.hostPlatform.isStatic
+      || stdenv.hostPlatform.isFreeBSD
+      || stdenv.hostPlatform.isCygwin
+      || stdenv.hostPlatform.isWindows
     ))
     (lib.cmakeBool "ENABLE_SHARED_LIB" (!stdenv.hostPlatform.isStatic))
     (lib.cmakeBool "ENABLE_STATIC_LIB" stdenv.hostPlatform.isStatic)
@@ -58,7 +61,7 @@ stdenv.mkDerivation (finalAttrs: {
     changelog = "https://github.com/ngtcp2/ngtcp2/releases/tag/v${finalAttrs.version}";
     description = "Implementation of the QUIC protocol (RFC9000)";
     license = lib.licenses.mit;
-    platforms = lib.platforms.unix;
+    platforms = lib.platforms.unix ++ lib.platforms.windows;
     maintainers = with lib.maintainers; [ izorkin ];
   };
 })